Synthesis,Structure and Characterization of a Strontium Complex
A Sr(Ⅱ)complex[Sr(L)2(H2O)4]n(1)was synthesized with 1,4,5,8-naphthalene tetracarboxylic acid(H4L1)and strontium chloride hexahydrate under solvothermal conditions.The structure was characterized by elemental analysis(EA),single crystal X-ray diffraction(SXRD),powder X-ray diffraction(PXRD),infrared spectroscopy(IR)and thermogravimetric analysis(TGA).The single crystal X-ray diffraction results indicate that H4L1 undergoes in-situ reaction to generate 1,3-dioxo-1H,3H-benzo[de]isomere-6,7-dicarboxylic acid(H2L).In complex 1,each Sr(Ⅱ)atom is located in the geometric configuration of a square antiprism.The L-ligands connect Sr atoms to form a one-dimensional chain structure.2D supramolecular structure is formed through hydrogen bonding and π …π stacking interactions.The solid states luminescence behavior of complex 1 was explored.It is found that complex 1 produces a wide emission spectrum band(450～690 nm)at the excitation wavelength of 211 nm,and the maximum emission wavelength appears at 535 nm.Therefore,it can be seen that complex 1 is a potential green light material.
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